<xs:complexType name="UInt64"><xs:annotation><xs:documentation>Unsigned 64 bit integer</xs:documentation><xs:appinfo source="http://www.smpte-ra.org/schemas/434/Types/TypeName">Uint64</xs:appinfo></xs:annotation><xs:simpleContent><xs:extension base="unsignedLong"><xs:attributeGroup ref="ebucore:typeGroup"><xs:annotation><xs:documentation> A group of attributes to define the type of attribute.</xs:documentation></xs:annotation></xs:attributeGroup></xs:extension></xs:simpleContent></xs:complexType>